You are reading a single comment by @hugo7 and its replies.
Click here to read the full conversation.
-
You know what? Given the structure and the cost effort ratio it deserves, I think this is a really good shout.
Cheers.
hugo7-
even more simple, dig out the mortar in a couple of joints and replace with these? DISCLAIMER: I am not in the building line but I see that the builder has used a number of them on our recent rear extension.
https://www.amazon.co.uk/Terracotta-Ventilation-Cavity-Retaining-Garden/dp/B00H5MFDMG
MTB-Idle
Drill a few holes in a current brick and screw one of these on top?
https://www.screwfix.com/p/map-vent-fixed-louvre-vent-with-flyscreen-brown-229mm-x-76mm/158hy#product_additional_details_container